The Medicine God Is Me, and There's Plenty of Boy's Urine

A young man transmigrates to the Tang dynasty and becomes a miracle-working physician, embarking on a series of adventures with the court. Using modern medicine, he diagnoses and treats members of the imperial family, eventually becoming a key minister of the Tang dynasty. He invents many things that are considered “brand-new” for the era. This is a funny, eventful story well worth reading.